F350 won't display clips in Sony Browsers

Hello Ian, Sorry for being redundant, this is a better forum for my question. Unable to work with discs via various Sony Browsers. Though the tree in XDCAM browser or Content Browser displays the disc icon and cliplist and planning subfolders,no clip folder is shown, though the XP 32bit SP3 computer sees the camera and all proper disc contents in Windows Explorer. However, I can play Full Res or proxy clips in XDCAM Viewer. Also, if clips [full or proxy] are dragged to other folders using Windows Explorer, a warning of "incorrect parameter" is displayed. FAM 2.3 on computer, cam firmware is AT 1.70/2.0. This system worked perfectly with XDCAM Browser until the hard drive was changed and fresh OS installed. Driver has been reinstalled twice, and various versions of Sony Browsers have been reinstalled, no success. Must I have XP pro?
Thanks